Describe the formation of newton's ring by reflected monochromatic light
Answers
Explanation:
Formation of Newton's Rings. Newton's rings are formed as a result of interference between the light waves reflected from the top and bottom surfaces of the air film formed between the lens and glass sheet. ... When a ray is incident on the surface of the lens, it is reflected as well as refracted.
Answer:
Newton's rings are a collection of concentric rings that alternate between bright and dark hues and are centered at the point where the two surfaces come into contact when viewed under a monochromatic color of light.
Explanation:
Newtons ring:
- Newton's ring is a method in which an air film contained between a plano-convex lens and a glass plate produces circular brilliant and dark fringes.
- A Plano-convex lens set on a flat glass plate can create an air wedge film.
- Where the lens and the plate are in contact with one another, the film has no thickness.
Formation of Newton’s Rings.
Reflections between the top and bottom surfaces of the air layer generated between the lens and glass sheet cause interference with light wavelengths, resulting in Newton's Rings.
The formation of Newton's Rings can be explained using the theory of light waves as follows:
- An air layer with varied thickness lies between the glass sheet and the lens.
- When a ray collides with the surface of the lens, reflection and refractive rays happen simultaneously.
- When refracted rays hit a glass surface, their phase changes by 180 degrees on reflection.
- A constructive interference occurs when the path difference between two waves is m+1/2*1, whereas a destructive interference occurs when the path difference is ml. Rings that are alternately bright and dark result from this.
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